本地使用Netty+Elasticsearch测试表单请求查询数据，无异常。将工程打包上传至服务器运行，页面请求后发生异常，连接关闭。
事件：前台通过Netty请求资源，Netty后台通过前台请求的JSON向ES查询数据，发生异常。
异常状况：
21:39:46,019 WARN org.elasticsearch.transport.netty:752 - [Jeanne-Marie Beaubier] exception caught on transport layer [[id: 0x8ed9a041, /xx.xx.xx.xxx:37506 => /xx.xx.xx.xx:9300]], closing connection java.lang.IllegalStateException: Message not fully read (response) for requestId [120], handler [[email protected]], error [false]; resetting at org.elasticsearch.transport.netty.MessageChannelHandler.messageReceived(MessageChannelHandler.java:145) at org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70) at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564) at org.jboss.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791) at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:296) at org.jboss.netty.handler.codec.frame.FrameDecoder.unfoldAndFireMessageReceived(FrameDecoder.java:462) at org.jboss.netty.handler.codec.frame.FrameDecoder.callDecode(FrameDecoder.java:443) at org.jboss.netty.handler.codec.frame.FrameDecoder.messageReceived(FrameDecoder.java:303) at org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70) at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564) at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:559) at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:268) at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:255) at org.jboss.netty.channel.socket.nio.NioWorker.read(NioWorker.java:88) at org.jboss.netty.channel.socket.nio.AbstractNioWorker.process(AbstractNioWorker.java:108) at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:337) at org.jboss.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:89) at org.jboss.netty.channel.socket.nio.NioWorker.run(NioWorker.java:178) at org.jboss.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108) at org.jboss.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745)
原因：本地Maven配置中引入Elasticsearch 2.1.0依赖以及Netty依赖，工程运行时，Elasticsearch底层会调用netty相关接口，而服务器中的Elasticsearch(2.1.0)在后台运行，其也会启动加载netty相关服务。两者同时存在，导致数据传输时出现问题。
解决办法：工程通过Maven打jar包时，排除Elasticsearch的相关jar包，只将其他依赖jar包打入。在服务器上运行时，通过设置class_path以及cp命令将服务器的ES相关jar包依赖导入，重新运行，即可。
服务器.sh文件的更改配置：
CLASS_PATH=$APP_HOME/ES-NETTY-WEB-0.0.0-beta.jar:/usr/local/elasticsearch/lib/*
JAVA_CMD="nohup $JAVA_HOME/bin/java $JAVA_OPTS -cp $CLASS_PATH $APP_MAINCLASS $APP_HOME/config.properties >/dev/null 2>&1 &"
时间： 2024-12-28 01:12:34